26 instances from 6 years 2020 - 2 instances Jan 18 Feb Mar Apr May Jun 28 Jul Aug Sep Oct Nov Dec 2019 - 3 instances Jan Feb 27 Mar Apr May Jun Jul 20 Aug Sep Oct 26 Nov Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 22 23 27 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 7 Feb Mar Apr May Jun 23 Jul Aug Sep Oct 3 Nov Dec 27 2016 - 13 instances Jan Feb 18 Mar Apr May Jun 20 21 3 Jun 21, 2016 3 instances 00:02:14 00:22:37 09:24:15 Jul Aug Sep 20 2 Sep 20, 2016 2 instances 12:02:11 12:27:04 Oct 1 2 Oct 1, 2016 2 instances 19:02:31 19:12:54 4 3 Oct 4, 2016 3 instances 11:19:56 11:30:44 12:28:43 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16